<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
           "http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <title>Loading ...</title>
  </head>
  <body>Loading ...</body>
  <script>
    window.opener.creationCallback("${embeddedUrl}");
    window.location.href="${editorUrl}";
  </script>
</html>